Remove the network capabilities which are added twice

Remove the network capabilities which are added twice in
createDefaultNetworkCapabilitiesForUid() and
createDefaultInternetRequestForTransport(). In the constructor
of NetworkCapabilities, it will add the DEFAULT_CAPABILITIES
which includes the NOT_RESTRICTED.

Bug: 142370233
Test: 1. Build pass.
      2. atest FrameworksNetTests
Change-Id: I7159909aec8faa7f25cef94195bdaea0fea55840